For users preferring minimally-intrusive kernel tree patching + recompile over installing separate V4L (as second approach is potentially risk if You have other tuners in system which are not covered by media build V4L instance) here are patches for 3.3.x & 3.5.x kernels

For Ubuntu users ( 12.04 ) and mythtv ( 0.25.2 ) : The latest driver from dvbsky ( 120728 ) seems to work ( no extensive tests done, please for those interested, update this page !) with a patch to apply ( can be found here : http://patchwork.linuxtv.org/patch/13563/ ), unfortunatly with a side effect on some other drivers, for example, an a dib7000, it is impossible to lock some multiplex while others have no problem. So far the only solution with no side effects detected is to use the old driver from dvbsky, media_build-3.3.x.tar.gz, with the patch.